Which best explains what happens to energy when we see a spark on the Van der Graaf generator? A. Chemical energy is being stored

B. Electrical potential energy is being converted into kinetic energy

C. Electrical kinetic energy is being stored

D. Chemical energy is being released

relative humidity is a measure of the amount of moisture in the air relative to the total amount of moisture the air can hold.

so d

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.